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Fix bug

This commit is contained in:
Lunny Xiao 2023-07-12 13:35:30 +08:00
parent f4e29f7b97
commit 0fdecc7777
No known key found for this signature in database
GPG Key ID: C3B7C91B632F738A
1 changed files with 43 additions and 42 deletions
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85
internal/statements/query.go
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@ -269,7 +269,11 @@ func (statement *Statement) writeForUpdate(w io.Writer) error {
}
func (statement *Statement) writeMssqlPaginationCond(w *builder.BytesWriter) error {
if statement.dialect.URI().DBType != schemas.MSSQL || statement.LimitN == nil {
if statement.RefTable == nil {
return errors.New("unsupported query limit without reference table")
}
if statement.dialect.URI().DBType != schemas.MSSQL || statement.Start <= 0 {
return nil
}
@ -277,51 +281,48 @@ func (statement *Statement) writeMssqlPaginationCond(w *builder.BytesWriter) err
if err := statement.writeTop(mssqlCondi); err != nil {
return err
}
if statement.Start > 0 {
if statement.RefTable == nil {
return errors.New("unsupported query limit without reference table")
var column string
if len(statement.RefTable.PKColumns()) == 0 {
for _, index := range statement.RefTable.Indexes {
if len(index.Cols) == 1 {
column = index.Cols[0]
break
}
}
var column string
if len(statement.RefTable.PKColumns()) == 0 {
for _, index := range statement.RefTable.Indexes {
if len(index.Cols) == 1 {
column = index.Cols[0]
break
}
}
if len(column) == 0 {
column = statement.RefTable.ColumnsSeq()[0]
}
if len(column) == 0 {
column = statement.RefTable.ColumnsSeq()[0]
}
} else {
column = statement.RefTable.PKColumns()[0].Name
}
if statement.NeedTableName() {
if len(statement.TableAlias) > 0 {
column = fmt.Sprintf("%s.%s", statement.TableAlias, column)
} else {
column = statement.RefTable.PKColumns()[0].Name
}
if statement.NeedTableName() {
if len(statement.TableAlias) > 0 {
column = fmt.Sprintf("%s.%s", statement.TableAlias, column)
} else {
column = fmt.Sprintf("%s.%s", statement.TableName(), column)
}
}
if _, err := fmt.Fprintf(mssqlCondi, "(%s NOT IN (SELECT TOP %d %s",
column, statement.Start, column); err != nil {
return err
}
if err := statement.writeFrom(mssqlCondi); err != nil {
return err
}
if err := statement.writeWhere(mssqlCondi); err != nil {
return err
}
if err := statement.WriteOrderBy(mssqlCondi); err != nil {
return err
}
if err := statement.writeGroupBy(mssqlCondi); err != nil {
return err
}
if _, err := fmt.Fprint(mssqlCondi, "))"); err != nil {
return err
column = fmt.Sprintf("%s.%s", statement.TableName(), column)
}
}
if _, err := fmt.Fprintf(mssqlCondi, "(%s NOT IN (SELECT TOP %d %s",
column, statement.Start, column); err != nil {
return err
}
if err := statement.writeFrom(mssqlCondi); err != nil {
return err
}
if err := statement.writeWhere(mssqlCondi); err != nil {
return err
}
if err := statement.WriteOrderBy(mssqlCondi); err != nil {
return err
}
if err := statement.writeGroupBy(mssqlCondi); err != nil {
return err
}
if _, err := fmt.Fprint(mssqlCondi, "))"); err != nil {
return err
}
if statement.cond.IsValid() {
if _, err := fmt.Fprint(w, " AND "); err != nil {
return err